Ground: Clay
| ITF M25 Kramsach | 2025/07/15 08:00 | Michael Gloeckler v Jonas Gundacker | 6-0,6-4 |
| ITF M15 Nyiregyhaza | 2025/06/19 09:30 | Nikita Mashtakov v Jonas Gundacker | 6-1,6-2 |
| ITF M15 Nyiregyhaza | 2025/06/18 09:30 | Jonas Gundacker v Patrik Meszaros | 4-6,6-3,7-5 |
| ITF M15 Klagenfurt | 2025/06/03 12:30 | Jonas Gundacker v Anton Matusevich | 7-5,2-6,2-5 |
| ITF M15 Gyula | 2025/05/28 09:30 | Paulo A S Dos Santos v Jonas Gundacker | 6-1,6-4 |
| UTR Pro Maria Lanzendorf | 2025/05/04 08:40 | Jonas Gundacker v Norbert Marosik | 3-6,2-6 |
| UTR Pro Maria Lanzendorf | 2025/05/03 09:30 | Sebastian Prechtel v Jonas Gundacker | 6-1,5-7,2-6 |
| UTR Pro Maria Lanzendorf | 2025/05/01 07:00 | Jonas Gundacker v Roman Garkavenko | 6-4,6-1 |
| ITF M15 Lodz | 2025/07/08 11:01 | Igor Marcondes v Jakub Filip | 6-3,7-6 |
| ITF M25 Marburg | 2025/07/02 12:49 | Jakub Filip v Joao Eduardo Schiessl | 6-7,2-6 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/29 09:00 | Zdenek Kolar v Jakub Filip | 6-4,6-2 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/28 09:00 | Jakub Filip v Matyas Cerny | 6-0,1-0 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/27 09:30 | Nicolas Parizzia v Jakub Filip | 4-6,6-4,3-6 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/26 12:19 | Jan Hrazdil v Jakub Filip | 5-7,1-4 |
| ITF M15 Grodzisk Mazowiecki | 2025/06/24 12:30 | Jeremy Gschwendtner v Jakub Filip | 1-6,4-6 |
| ITF M15 Saarlouis | 2025/06/19 09:30 | Jakub Filip v Niels Visker | 6-4,7-6 |